fs/gfs2/util.h

   1 /*
   2  * Copyright (C) Sistina Software, Inc.  1997-2003 All rights reserved.
   3  * Copyright (C) 2004-2006 Red Hat, Inc.  All rights reserved.
   4  *
   5  * This copyrighted material is made available to anyone wishing to use,
   6  * modify, copy, or redistribute it subject to the terms and conditions
   7  * of the GNU General Public License version 2.
   8  */
   9
  10 #ifndef __UTIL_DOT_H__
  11 #define __UTIL_DOT_H__
  12
  13 #include <linux/mempool.h>
  14
  15 #include "incore.h"
  16
  17 #define fs_printk(level, fs, fmt, arg...) \
  18         printk(level "GFS2: fsid=%s: " fmt , (fs)->sd_fsname , ## arg)
  19
  20 #define fs_info(fs, fmt, arg...) \
  21         fs_printk(KERN_INFO , fs , fmt , ## arg)
  22
  23 #define fs_warn(fs, fmt, arg...) \
  24         fs_printk(KERN_WARNING , fs , fmt , ## arg)
  25
  26 #define fs_err(fs, fmt, arg...) \
  27         fs_printk(KERN_ERR, fs , fmt , ## arg)
  28
  29
  30 void gfs2_assert_i(struct gfs2_sbd *sdp);
  31
  32 #define gfs2_assert(sdp, assertion) \
  33 do { \
  34         if (unlikely(!(assertion))) { \
  35                 gfs2_assert_i(sdp); \
  36                 BUG(); \
  37         } \
  38 } while (0)
  39
  40
  41 int gfs2_assert_withdraw_i(struct gfs2_sbd *sdp, char *assertion,
  42                            const char *function, char *file, unsigned int line);
  43
  44 #define gfs2_assert_withdraw(sdp, assertion) \
  45 ((likely(assertion)) ? 0 : gfs2_assert_withdraw_i((sdp), #assertion, \
  46                                         __func__, __FILE__, __LINE__))
  47
  48
  49 int gfs2_assert_warn_i(struct gfs2_sbd *sdp, char *assertion,
  50                        const char *function, char *file, unsigned int line);
  51
  52 #define gfs2_assert_warn(sdp, assertion) \
  53 ((likely(assertion)) ? 0 : gfs2_assert_warn_i((sdp), #assertion, \
  54                                         __func__, __FILE__, __LINE__))
  55
  56
  57 int gfs2_consist_i(struct gfs2_sbd *sdp, int cluster_wide,
  58                    const char *function, char *file, unsigned int line);
  59
  60 #define gfs2_consist(sdp) \
  61 gfs2_consist_i((sdp), 0, __func__, __FILE__, __LINE__)
  62
  63
  64 int gfs2_consist_inode_i(struct gfs2_inode *ip, int cluster_wide,
  65                          const char *function, char *file, unsigned int line);
  66
  67 #define gfs2_consist_inode(ip) \
  68 gfs2_consist_inode_i((ip), 0, __func__, __FILE__, __LINE__)
  69
  70
  71 int gfs2_consist_rgrpd_i(struct gfs2_rgrpd *rgd, int cluster_wide,
  72                          const char *function, char *file, unsigned int line);
  73
  74 #define gfs2_consist_rgrpd(rgd) \
  75 gfs2_consist_rgrpd_i((rgd), 0, __func__, __FILE__, __LINE__)
  76
  77
  78 int gfs2_meta_check_ii(struct gfs2_sbd *sdp, struct buffer_head *bh,
  79                        const char *type, const char *function,
  80                        char *file, unsigned int line);
  81
  82 static inline int gfs2_meta_check(struct gfs2_sbd *sdp,
  83                                     struct buffer_head *bh)
  84 {
  85         struct gfs2_meta_header *mh = (struct gfs2_meta_header *)bh->b_data;
  86         u32 magic = be32_to_cpu(mh->mh_magic);
  87         if (unlikely(magic != GFS2_MAGIC)) {
  88                 printk(KERN_ERR "GFS2: Magic number missing at %llu\n",
  89                        (unsigned long long)bh->b_blocknr);
  90                 return -EIO;
  91         }
  92         return 0;
  93 }
  94
  95 int gfs2_metatype_check_ii(struct gfs2_sbd *sdp, struct buffer_head *bh,
  96                            u16 type, u16 t,
  97                            const char *function,
  98                            char *file, unsigned int line);
  99
 100 static inline int gfs2_metatype_check_i(struct gfs2_sbd *sdp,
 101                                         struct buffer_head *bh,
 102                                         u16 type,
 103                                         const char *function,
 104                                         char *file, unsigned int line)
 105 {
 106         struct gfs2_meta_header *mh = (struct gfs2_meta_header *)bh->b_data;
 107         u32 magic = be32_to_cpu(mh->mh_magic);
 108         u16 t = be32_to_cpu(mh->mh_type);
 109         if (unlikely(magic != GFS2_MAGIC))
 110                 return gfs2_meta_check_ii(sdp, bh, "magic number", function,
 111                                           file, line);
 112         if (unlikely(t != type))
 113                 return gfs2_metatype_check_ii(sdp, bh, type, t, function,
 114                                               file, line);
 115         return 0;
 116 }
 117
 118 #define gfs2_metatype_check(sdp, bh, type) \
 119 gfs2_metatype_check_i((sdp), (bh), (type), __func__, __FILE__, __LINE__)
 120
 121 static inline void gfs2_metatype_set(struct buffer_head *bh, u16 type,
 122                                      u16 format)
 123 {
 124         struct gfs2_meta_header *mh;
 125         mh = (struct gfs2_meta_header *)bh->b_data;
 126         mh->mh_type = cpu_to_be32(type);
 127         mh->mh_format = cpu_to_be32(format);
 128 }
 129
 130
 131 int gfs2_io_error_i(struct gfs2_sbd *sdp, const char *function,
 132                     char *file, unsigned int line);
 133
 134 #define gfs2_io_error(sdp) \
 135 gfs2_io_error_i((sdp), __func__, __FILE__, __LINE__);
 136
 137
 138 int gfs2_io_error_bh_i(struct gfs2_sbd *sdp, struct buffer_head *bh,
 139                        const char *function, char *file, unsigned int line);
 140
 141 #define gfs2_io_error_bh(sdp, bh) \
 142 gfs2_io_error_bh_i((sdp), (bh), __func__, __FILE__, __LINE__);
 143
 144
 145 extern struct kmem_cache *gfs2_glock_cachep;
 146 extern struct kmem_cache *gfs2_glock_aspace_cachep;
 147 extern struct kmem_cache *gfs2_inode_cachep;
 148 extern struct kmem_cache *gfs2_bufdata_cachep;
 149 extern struct kmem_cache *gfs2_rgrpd_cachep;
 150 extern struct kmem_cache *gfs2_quotad_cachep;
 151 extern struct kmem_cache *gfs2_rsrv_cachep;
 152 extern mempool_t *gfs2_page_pool;
 153
 154 static inline unsigned int gfs2_tune_get_i(struct gfs2_tune *gt,
 155                                            unsigned int *p)
 156 {
 157         unsigned int x;
 158         spin_lock(&gt->gt_spin);
 159         x = *p;
 160         spin_unlock(&gt->gt_spin);
 161         return x;
 162 }
 163
 164 #define gfs2_tune_get(sdp, field) \
 165 gfs2_tune_get_i(&(sdp)->sd_tune, &(sdp)->sd_tune.field)
 166
 167 void gfs2_icbit_munge(struct gfs2_sbd *sdp, unsigned char **bitmap,
 168                       unsigned int bit, int new_value);
 169 int gfs2_lm_withdraw(struct gfs2_sbd *sdp, char *fmt, ...);
 170
 171 #endif /* __UTIL_DOT_H__ */
 172